It is very important to understand how to calculate the bandwidth and recording storage capacity for a surveillance camera system. First, let's understand some common surveillance video terminology.
Bitrate: Bitrate refers to the number of bits transferred per second. Bitrate is related to audio or video quality; usually, a higher bitrate results in better audio or video quality, but also produces larger files. Conversely, a lower bitrate results in lower quality, but smaller file sizes.
Data Rate: Data rate is the amount of data stream of a video file used per unit of time, or simply called "bit rate". In video encoding, data rate is the main parameter that controls image quality. For the same resolution, the higher the bit rate, the lower the compression rate and the better the image quality. OHWOAI's home wireless solar battery and poe powered security cameras come with a unique double WIFI antenna to improve WIFI signal reception. After connecting to WIFI, the image is stable and the call can be heard clearly. Up to 8 units can be added.
Upstream upload: Upstream upload refers to the bandwidth required for local devices to upload data to the network. The upstream upload speed represents the data transfer rate when users upload data to the network. For example, when you use FTP to upload a file, the upstream upload speed affects the upload speed.
Downstream: Downstream refers to the bandwidth for downloading data from a network. Downstream speed refers to the data transfer speed when a user downloads data from a network. For example, when downloading a file from an FTP server, the downstream speed affects the download speed. OHWOAI's home wireless solar battery and poe powered security camera has IP67 waterproof and dustproof specifications, with a strong waterproof level, and no harmful effects even in bad weather such as rain and wind. It can also be installed outdoors. Equipped with remote monitoring and alarm, no worries anywhere!
The important thing is that the bandwidth of a monitoring point is the minimum bandwidth required to upload to the monitoring center, and the bandwidth of the monitoring center is the minimum bandwidth required to download video data from the monitoring point. For example, if you use 2Mbps ADSL broadband, the upstream bandwidth is theoretically 512kbps (64kb/s) and the downstream bandwidth is 2Mbps (256kbps).
Here is a concrete example: Surveillance systems are deployed at 5 different locations, each location has 10 cameras, for a total of 50 cameras. One monitoring center is responsible for remote monitoring and storing video information with a storage period of 30 days. Calculate the bandwidth and storage space size for different video formats.
Security camera position
In the 720P (1 million pixels) video format, the bit rate of each camera is 2Mbps, which means the data transfer bandwidth required for each camera is 2Mbps, and 10 cameras require:
2Mbps (video format bit rate) x 10 (number of cameras) = 20Mbps (upstream)
This means that if you use 720P video format, the network upstream required for monitoring each location is at least 20Mbps.
In 1080P (2 megapixel) video format, the bitrate for each camera is 4Mbps. Therefore, 10 cameras require:
4Mbps (video format bit rate) x 10 (number of cameras) = 40Mbps (upstream)
This means that if you use 1080P video format, the network upstream required for monitoring each location is at least 40Mbps.
Surveillance Center: 720P (1 million pixels) video format required bandwidth:
2Mbps (video format bitrate) x 50 (total number of cameras in monitoring point) = 100Mbps (download bandwidth)
That is, if you use 720P video format, the network download bandwidth required for the surveillance center is at least 100Mbps.
Required bandwidth for 1080P (2MP) video format:
4Mbps (video format bitrate) x 50 (total number of cameras in monitoring point) = 200Mbps (download bandwidth)
That is, if you use 1080P video format, the network download bandwidth required for the surveillance center is at least 200Mbps.
Storage Space Calculation:
Bitrate (in kb/s, i.e. bitrate ÷ 8) x 3600 (in seconds, seconds in an hour) x 24 (in hours, hours in a day) x 30 (days to store) x 50 (total number of surveillance points to store camera recordings) ÷ 0.9 (10% space loss due to disk formatting) = size of storage space required (Note: storage unit conversion 1TB = 1024GB, 1GB = 1024MB, 1MB = 1024KB)
If you want to store 50 minutes of recording information in CIF video format for 30 days, the required storage space is as follows:
64×3600×24×30×50÷0.9= 8789.1GB≈9TB
If you want to store 50 minutes of recording information in D1 video format for 30 days, the required storage space is as follows:
192×3600×24×30×50÷0.9=26TB
In short, understanding how to calculate bandwidth and storage space is essential to the effective design and maintenance of a surveillance system. OHWOAI provides professional surveillance solutions tailored to your needs and helps you We will help you ensure your surveillance equipment is working properly.
Bitrate: Bitrate refers to the number of bits transferred per second. Bitrate is related to audio or video quality; usually, a higher bitrate results in better audio or video quality, but also produces larger files. Conversely, a lower bitrate results in lower quality, but smaller file sizes.
Data Rate: Data rate is the amount of data stream of a video file used per unit of time, or simply called "bit rate". In video encoding, data rate is the main parameter that controls image quality. For the same resolution, the higher the bit rate, the lower the compression rate and the better the image quality. OHWOAI's home wireless solar battery and poe powered security cameras come with a unique double WIFI antenna to improve WIFI signal reception. After connecting to WIFI, the image is stable and the call can be heard clearly. Up to 8 units can be added.
Upstream upload: Upstream upload refers to the bandwidth required for local devices to upload data to the network. The upstream upload speed represents the data transfer rate when users upload data to the network. For example, when you use FTP to upload a file, the upstream upload speed affects the upload speed.
Downstream: Downstream refers to the bandwidth for downloading data from a network. Downstream speed refers to the data transfer speed when a user downloads data from a network. For example, when downloading a file from an FTP server, the downstream speed affects the download speed. OHWOAI's home wireless solar battery and poe powered security camera has IP67 waterproof and dustproof specifications, with a strong waterproof level, and no harmful effects even in bad weather such as rain and wind. It can also be installed outdoors. Equipped with remote monitoring and alarm, no worries anywhere!
The important thing is that the bandwidth of a monitoring point is the minimum bandwidth required to upload to the monitoring center, and the bandwidth of the monitoring center is the minimum bandwidth required to download video data from the monitoring point. For example, if you use 2Mbps ADSL broadband, the upstream bandwidth is theoretically 512kbps (64kb/s) and the downstream bandwidth is 2Mbps (256kbps).
Here is a concrete example: Surveillance systems are deployed at 5 different locations, each location has 10 cameras, for a total of 50 cameras. One monitoring center is responsible for remote monitoring and storing video information with a storage period of 30 days. Calculate the bandwidth and storage space size for different video formats.
Security camera position
In the 720P (1 million pixels) video format, the bit rate of each camera is 2Mbps, which means the data transfer bandwidth required for each camera is 2Mbps, and 10 cameras require:
2Mbps (video format bit rate) x 10 (number of cameras) = 20Mbps (upstream)
This means that if you use 720P video format, the network upstream required for monitoring each location is at least 20Mbps.
In 1080P (2 megapixel) video format, the bitrate for each camera is 4Mbps. Therefore, 10 cameras require:
4Mbps (video format bit rate) x 10 (number of cameras) = 40Mbps (upstream)
This means that if you use 1080P video format, the network upstream required for monitoring each location is at least 40Mbps.
Surveillance Center: 720P (1 million pixels) video format required bandwidth:
2Mbps (video format bitrate) x 50 (total number of cameras in monitoring point) = 100Mbps (download bandwidth)
That is, if you use 720P video format, the network download bandwidth required for the surveillance center is at least 100Mbps.
Required bandwidth for 1080P (2MP) video format:
4Mbps (video format bitrate) x 50 (total number of cameras in monitoring point) = 200Mbps (download bandwidth)
That is, if you use 1080P video format, the network download bandwidth required for the surveillance center is at least 200Mbps.
Storage Space Calculation:
Bitrate (in kb/s, i.e. bitrate ÷ 8) x 3600 (in seconds, seconds in an hour) x 24 (in hours, hours in a day) x 30 (days to store) x 50 (total number of surveillance points to store camera recordings) ÷ 0.9 (10% space loss due to disk formatting) = size of storage space required (Note: storage unit conversion 1TB = 1024GB, 1GB = 1024MB, 1MB = 1024KB)
If you want to store 50 minutes of recording information in CIF video format for 30 days, the required storage space is as follows:
64×3600×24×30×50÷0.9= 8789.1GB≈9TB
If you want to store 50 minutes of recording information in D1 video format for 30 days, the required storage space is as follows:
192×3600×24×30×50÷0.9=26TB
In short, understanding how to calculate bandwidth and storage space is essential to the effective design and maintenance of a surveillance system. OHWOAI provides professional surveillance solutions tailored to your needs and helps you We will help you ensure your surveillance equipment is working properly.
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